Universal remote telephone line concentrator



Jan. 18, 1966 29 Sheets-Sheet 1 Original Filed Oct. 5l. 1960 A 7' TORNEV Jan. 18, 1966 29 Sheets-Sheet 2 Original Filed Oct. 5l, 1960 /NVENTOP M. E. KRO/w Jan. 18, 1966 29 Sheets-Sheet 3 Original Filed Oct. 3l. 1960 NNI) /A/l/ENTOR M. E. KROM M. E. KRoM 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR Jan. 18, 1966 29 Sheets-Sheet 4 Original Filed Oct. 3l. 1960 /NVE/vmp M. E. KROM M. E. KRoM 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR Jan. 18, 1966 29 Sheets-Sheet 5 Original Filed Oct. 51, 1960 SVN M. E. KRoM 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR Jan. 18, 1966 29 Sheets-Sheet 6 Original Filed Oct. 51, 1960 /M/E/v To@ M. E. KROM Jan. 18, 1966 M. E. KRoM 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR Original Filed Oct. .'51, 1960 29 Sheets-Sheet '7 Jan. 18, 1966 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE coNcENTRAToR M. E. KRoM 29 Sheets-Sheet 9 Original Filed Oct. 31. 1960 ism/1 blk mdvm

/NVE/vroR M. E. KROM Jan. 18, 1966 M. E. KROM 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR original Filed oci. s1. 19Go 29 sheets-sheet io S El Jan. 18, 1966 M. E. KROM 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR Original Filed Oct. 3l, 1960 29 Sheets-Sheet 11 M. E. KROM 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR Jan. 18, 1966 29 Sheets-Sheet 12 Original Filed Oct. 3l. 1960 UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR Original Filed Oct. 3l. 1960 M. E. KROM Jan. 18, 1966 29 Sheets-Sheet 15 ants bem.

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//v VEN rop M. E. KROM Jan. 18, 1966 29 Sheets-Sheet 14 Original Filed Oct. 3l. 1960 UNWERSAL REMOTE TELEPHONE LINE GONCENTRATOR Original Filed 0G13. 5l, 1960 M. E. KROM Jan. 18, 1966 29 Sheets-Sheet 15 /NVE/vof? M. E. KROM Jan. 18, 1966 M. E. KROM 3,230,314

UNIVERSAL REMOTE TELEPHENE LINE coNcENTRAToE Original Filed Oct. 51, 1960 29 Sheets-Sheet 16 Jan. 18, 1966 29 Sheets-Sheet 17 Original Filed Oct. 31, 1960 Q ...3l Ok M. E. KROM M. E. KRoM 3,230,314

UNIVERSAL REMOTE TELEPHONE LINE CONCENTRATOR Jan. 18, 1966 29 Sheets-Sheet 18 Original Filed Oct. 3l. 1960 /NVE/vrop M. E. KROM M. E. KRoM 3,230,314

UNIVERSAL REMOTE TELEPHCNE LINE CONCENTRATOR Jan. 18, 1966 29 Sheets-Sheet 19 Original Filed Oct. 5l, 1960 /A/ VEN To@ M. E KROM ON GP* Jan. 18, 1966 29 Sheets-Shee'cl 20 Original Filed Oct. 31, 1960 /NVENTUR M. E. KROM 

3. A REMOTE TELEPHONE LINE CONCENTRATOR INCLUDING A PLURALITY OF LINES, A CENTRAL OFFICE, A PLURALITY OF TRUNKS FEWER IN NUMBER THAN SAID LINES FOR COUPLING SAID LINES TO SAID OFFICE, REMOTE SWITCHING MEANS FOR CONNECTING SAID LINES TO SAID TRUNKS UNDER CON TROL OF SAID CENTRAL OFFICE, SIGNALING MEANS AT SAID REMOTE SWITCHING MEANS AND AT SAID OFFICE FOR TRANSMITTING THE IDENTIFICATION OF SAID LINES AND SAID TRUNKS, SAID SIGNALING MEANS INCLUDING MEANS FOR APPLYING DIRECT-CURRENT SIGNALS TO SAID LINES ON A TERNARY AMPLITUDE COMBINATION BASIS, AND MEANS INCLUDED IN SAID SIGNALING MEANS FOR ENABLING BIDIRECTIONAL SIGNAL TRANSMISSION BETWEN SAID REMOTE SWITCHING MEANS AND SAID CENTRAL OFFICE.
 12. A UNIVERSAL TELEPHONE LINE CONCENTRATOR SYSTEM INCLUDING A PLURALITY OF LINES, A LESSER PLURALITY OF TRUNKS, A CENTRAL OFFICE, A REMOTE SWITCHING UNIT FOR CONNECTING SAID LINES TO SAID TRUNKS, A CONTROL SWITCHING UNIT AT SAID CENTRAL OFFICE FOR CONNECTING SAID TRUNKS TO SAID OFFICE, AND PREFERENCE CONTROL CIRCUIT MEANS AT SAID CONTROL UNIT EFFECTIVE ON THE SIMULTANEOUS APPEARANCE OF ORIGINATING CALLS, TERMINATING CALLS AND DISCONNECT CALLS ON SAID LINES TO ACCORD PREFERENCE TO A SELECTED ONE OF SAID CALLS. 